$SIG is one of biggest losers #stocks today. read more:

Signet Jewelers Limited Common (symbol: SIG) was one of the worst losers of
the trading day today (2016-08-25), losing -12.63%. The number of shares
that changed hands was 10,803,429, or about 5 times the average daily
volume in the stock.
The closing price was $83.44, amounting to a market cap of $6,510,000,000,
about -45.2% off the highest price in the last 12 months. The stock has
been trading at a range between $77.0 and $152.27.
SIG is in the Consumer Specialties industry, part of the Consumer Services
sector.
Looking at its valuation, the stock is now trading at 13.34 times earnings.